Variable Set

A variable set is a grouping of one or more related variables. It may consist of a single variable (e.g., a variable measuring the age of people in a Data Set), or it may consist of multiple related variables (e.g., the age of people within a household, where there is one variable for each person).

Properties

A set of variables that are in the variable set. Note that while a variable can only appear once in a variable set, it can be copied multiple times so this restriction is more of an organizing principle than a constraint.